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path: root/spec/unit/puppet/parser/functions/values_at_spec.rb
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#!/usr/bin/env rspec
require 'spec_helper'

describe "the values_at function" do
  before :all do
    Puppet::Parser::Functions.autoloader.loadall
  end

  before :each do
    @scope = Puppet::Parser::Scope.new
  end

  it "should exist" do
    Puppet::Parser::Functions.function("values_at").should == "function_values_at"
  end

  it "should raise a ParseError if there is less than 1 arguments" do
    lambda { @scope.function_values_at([]) }.should( raise_error(Puppet::ParseError))
  end

  it "should raise a ParseError if you try to use a range where stop is greater then start" do
    lambda { @scope.function_values_at([['a','b'],["3-1"]]) }.should( raise_error(Puppet::ParseError))
  end

  it "should return a value at from an array" do
    result = @scope.function_values_at([['a','b','c'],"1"])
    result.should(eq(['b']))
  end

  it "should return a value at from an array when passed a range" do
    result = @scope.function_values_at([['a','b','c'],"0-1"])
    result.should(eq(['a','b']))
  end

  it "should return chosen values from an array when passed number of indexes" do
    result = @scope.function_values_at([['a','b','c'],["0","2"]])
    result.should(eq(['a','c']))
  end

  it "should return chosen values from an array when passed ranges and multiple indexes" do
    result = @scope.function_values_at([['a','b','c','d','e','f','g'],["0","2","4-5"]])
    result.should(eq(['a','c','e','f']))
  end

end